ID: 7478e No.685
I recommend just getting a new one, but if you really want to fix it, there are ways.
You could try glue:http://en-nls.com/pict1-12570
Or you could solder it:http://en-nls.com/pict1-20241
If there isn't enough material to work with you could get a small cheap one to cut up and use as a patch:http://en-nls.com/pict1-26911
I don't think it's worth the trouble though.
ID: 5537f No.686
You can attempt a fix like AnonymousD did (see end of post: https://blog.onahole.eu/chitsu-pita-lolinco.html
), but the onahole won't probably be as durable as before.